Abstract

Various non-acid pretreatment were studied in a seawater reverse osmosis desalination plant for approximately one year with particular attention to microbial aspects of fouling. The basic mechanisms of microbial fouling are discussed and particular attention is directed specifically at reverse osmosis systems. Both polyacrylate and tannic acid showed some promise as an alternative to acid pretreatment and chlorination. A new assay was developed which holds the promise to predict the potential of any feed water sample to promote microbial fouling.

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